By B. Stonehouse

Arctic atmospheric pollutants is now an incredible foreign factor. This quantity offers the main authoritative overview of this more and more vital topic for an viewers of either scientists and directors eager about around the world, in addition to polar, pollutants difficulties. Arctic pollution is an edited number of papers, first provided at a convention helo because the Scott Polar study Institute in Cambridge in 1985. construction on foundations confirmed at previous conferences, this quantity examines the matter of Arctic pollution in an built-in, multidisciplinary style, with contributions from best gurus in chemistry, ecology, climatology and epidemiology. To chemists, physicists and climatologists, it provides medical difficulties. Ecologists are fascinated with environmental threats; clinical researchers with capability threats to human health and wellbeing. foreign attorneys and directors are excited about the felony implications of pollution transferred throughout continents. total hangs the foremost query; can man-made toxins have an effect on the fragile power stability of the Arctic, and precipitate significant climatic swap all over the world?

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A snowpack chemistry survey in the Northwest Territories of Canada in March 1984 (Shewchuk 1985) at sites on the pre-Cambrian shield remote from calcareous soils, yielded H + , NH 4 + , NO3~ and SO4= concentrations in the range 2-10, 1-2, 5-7, and 7-18 /^eq/1 respectively. In March 1978 the snowpack in north-eastern Alberta at sites remote from local sources had H + concentration of 8-20 /^eq/1"1 and SO4= and NO3~ as the predominant anions (Barrie 1980). Thus the snowpack is slightly acidic and there is sufficient SO4= and NO3~ to explain the acidity.

Geophysical Research Letters, 11: 433-36. SCHNELL, R. C. AND RAATZ, W. E. 1984. Vertical and horizontal characteristics of arctic haze during AGASP; Alaskan Arctic. Geophysical Research Letters, 11: 369-76. SEMB, A. AND OTHERS. 1984. Major ions in Spitsbergen snow samples. Geophysical Research Letters, 11: 445^8. SHAW, G. E. 1975. The vertical distribution of tropospheric aerosols at Barrow, Alaska. Tellus, 27: 39-49. SHAW, G. E. 1982. Atmospheric turbidity in the polar regions. Journal of Applied Meteorology, 21: 1080-88.

Change in planetary albedo with varying burdens of elemental carbon, expressed as optical density T E C , in the earth- atmosphere system. 5 km (UC), as individual particles inside the stratus (IC), and evenly distributed in the troposphere above the cloud (OC). absorption data and vertical profiles of meteorological and aerosol parameters. ECconcentrations were a factor 2-4 higher than during the first campaign. Wendling and others (1985) evaluated the measured data with their radiation model in the solar spectral range.

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